
•Small torque change, good dynamic balance, 
  the system runs stably, little vibration, low noise, high efficiency
•More higher efficiency in part load running
Energy Efficiency 
Low noise level
Night Quiet Operation Function
Easy installation
Compact Side Discharge Design, Big Capacity, Small 
Floor Area 
Small floor area, only 0.42m
2
, 43% floor area can be reduced
Compact Side Discharge Design 
No need additional ventilation hood comparing with top
discharge unit
Easy Installation
4 Way pipe connection
Front, rear, right, down 4 way pipe connection, flexible installation
Easy Service
•Total pipe length: 300m
•Single pipe length: Max.175m
•From outdoor to the first branch pipe: 135m
•From the first branch to the farthest indoor door unit: 40m
•Height drop: 50m( outdoor above)/40m (outdoor below)
•Height drop between indoor units: 15m
Easy for refrigerant charging
071 072
MRV IV-C MRV III-C MRVIII-RC MRV  S
II
Easy MRV  MRV AHU MRV Indoor Reference ProjectsControl SystemMRV W
MRV  S
II  
(8/10/12HP)
Noise can be reduced to 45dB(A)  Low noise operation
•DC INVERTER compressor, smooth operation, no need 
frequent start the compressor, effectively reduce the noise outdoor 
•Vector inverter control, more precise control 
•DC fan motor, motor bracket used the non-resonance 
structure, ensure smooth running of the motor, reduce 
operating noise
•Big diameter fan, 
design  according 
to aviation quieter 
principle 
DC motor
9hrs8hrs
Night mode
Lower 10dB(A) than normal
Night mode ends
Night mode starts
Peak in the outdoor temperature
08:00
100
50
0
58
50
12:00 16:00 20:00 00:00 04:00 08:00
Operation dB(A) Load% Capabiity
0.8m
1.8m
0.77m
0.42m
2
0.745m
2
43% 
floor area 
reduced 
188mm 
height 
reduced 
Good solution 
for 
narrow space
Easy installation
Long pipe length, high height drop  Parameter display panel  
Separate refrigerant charging valve
New DC inverter twin rotary compressor  
DC FAN 
MOTOR
Strong 
magnetic 
rotor, small 
vortex of 
refrigerant
15m
50m
Single 
pipe 
length
175 m
Total pipe
length 
300m 
Separate 
refrigerant 
charging 
valve
•The first original parameter display panel on the side  
•The parameter can be observed directly by opening the 
protective cover in case of maintenance, to avoid removing the 
repair board
Easy maintenance for control 
Parameter 
display
Cover
AC FAN 
Control PCB
Main PCB
Traditional products need to 
open the front panel or top 
control box cover for 
maintenance
DC FAN 
Control PCB
•The control box is in front, reserving space 108mm between 
control box and top panel, easy maintenance from the top  
Control box is with hinge design, easy to open for maintenance
Maintenance
from the top
Hinge design
Difficult to 
maintenance 
from the front